Ever since I got the extra battery with the charger, I don't worry about battery life. It's a non-issue. Thank God we have that option with the GN....unlike the Razr or iPhone. I "rented" the Razr for a month but I was always stressing about battery life.
Now I keep my phone on 4G, BT, wifi, etc...etc.... without worry. If you find yourself constantly monitoring battery life, stop driving yourself nuts and get the extra battery and start enjoying the GN they way you ought to be!